Extruder Barrels

We manufacture new extruder barrels and refurbish worn barrels for every extruder in service: twin-screw co-rotating and counter-rotating compounders, single-screw extruders and extruder-pelletizer lines. We supply individual barrel sections, bimetallic and solid-bore barrels, replacement liners, and complete barrel trains bored, matched and aligned to your machine.

What We Supply

• Feed barrels — hopper-throat sections with feed pockets, undercut geometry and intensive cooling.

• Vent and side-feed barrels — atmospheric and vacuum vent sections, side-feeder and side-degassing housings.

• Closed and conveying barrels — plain closed sections in all standard and custom lengths.

• Combi and injection barrels — liquid and additive injection sections with nozzle bosses, valve seats and pressure-tight port fittings.

• Bimetallic barrels and liners — centrifugally cast wear-alloy inlays and replaceable sleeves for abrasive and corrosive service.

• Discharge and adapter barrels — end sections, transition pieces and die-plate adapters.

• Complete barrel trains — a full set bored, honed, matched section to section and shipped ready to install, with heating and cooling provisions in place.

Extruder Platform Coverage

We manufacture and supply new and replacement barrels, barrel sections and liners for all extruder platforms in service today, including — but not limited to — the machines below.

Platforms not listed are equally within scope, including obsolete and out-of-production equipment reproduced by reverse engineering. The extruder manufacturer and model are sufficient to open a project.

JSW Extruder Platforms

Our extruder program is built around JSW equipment. We hold established manufacturing experience across the CMP and CIM platforms: bore geometry and center distance, flange and tie-bar interfaces, feed and vent port arrangements, heating and cooling circuit layouts, liner alloy specifications and the wear mechanisms that limit barrel life on these machines.

The following barrel components are supplied for the JSW CMP251, CMP274, CMP308, CMP335, CMP362, CMP387 and CMP443, and for the CIM360, CIM400, CIM460, CIM510 and CIM560:

Barrel sections are supplied individually, as a complete matched train, or within a wider extruder and pelletizer package covering screws and screw elements, die plates, pelletizer knives, mechanical seals, couplings and bearing bushes — including Nordson BKG pelletizer drive and rotor parts — with interface dimensions coordinated across the assembly.

Materials

Liner alloys are selected against the actual wear mechanism — abrasion, corrosion or both — and upgraded where the original material was under-specified for the process.

Refurbishment

Most worn barrels can be restored to original bore diameter and clearance and returned to service at a fraction of the cost of a new barrel train.

1. Incoming inspection — bore diameter, ovality and figure-eight wear measured along the full length; center distance, straightness, flange flatness and port condition checked against original geometry; hardness check and crack detection.
2. Condition report — measured bore wear against the service limit, remaining life and a clear recommendation: reline, rebore, repair or run on.
3. Cleaning and circuit service — full polymer removal, cooling bore and channel cleaning, descaling, and pressure testing of the heating and cooling circuits.
4. Rebore and reline — the worn bore is machined oversize and fitted with a new bimetallic or solid liner, or a new wear alloy is centrifugally cast in place; damaged flanges, ports, seats and threads are weld repaired and re-machined.
5. Finish machining and surface treatment — the bore is honed back to original diameter, center distance and surface finish; re-nitriding or an upgrade to a harder liner alloy is applied where required.
6. Final inspection and matching — bore, center distance and hardness verification, section-to-section trial assembly of the barrel train, and screw clearance check before shipment.

Barrels relined with an upgraded wear alloy routinely outlast the original bore.

Reverse Engineering

We hold the technical information needed to produce barrels for the platforms above. Where a barrel is obsolete, undocumented or from an out-of-production machine, we reverse engineer it from the worn part: full dimensional capture of bore, center distance, ports, flanges and circuits, material and hardness analysis, and a complete manufacturing drawing package that becomes the permanent record for repeat supply.